Door-spring



(No Model.)

A. CARRIER.

DOOR SPRING.

No. 321,949. Patented July 14, 1885..

' iINTTnn STATES PATnNT @Trina ARTHUR CARRIER, OF VBAY CITY, MICHIGAN.

DOOR-SPRING.

SPECIFICATION forming part of Letters Patent No. 321,949, dated July 14, 1885.

Application filed November 8, 1884. (No model.)

To all whom, t may concern,.-

Be it known that I, ARTHUR CARRIER, a citizen of Canada, and a subject'of the Queen of Great Britain, and a resident of Bay City, in Bay county, and State of Michigan, have invented anew and useful Improvement in Door- Springs, of which the following is a specification.

My invention relates to improvements in door-springs in which a hinged arm acted upon by a spring operates to close the open door, and the object of my invention is to produce a device by means of which an open door may be automatically closed, or may be securely fastened in any desired position.

I attain this object by means of the mechanism described hereinafter,and illustrated in the accompanying drawings, in which- Figure lis an elevation of a portion of a' door with my improved door-spring attached thereto. Fig. 2 is a plan view of the same showing the door closed. Fig. 3 is a view of the same showing the door partly open. Fig. 4 is a view of thc same showing the door entirely open. Fig. 5 is a sectional View at x x.

Similar letters refer to similar parts throughout the several views.

a represents a door, and bthe jamb or frame to which it is hinged. t' is an arm, which is pivoted at d to the plate c by the pin o, the plate c being secured to the frame b and provided atits upper and lower ends with outwardextending parts q, which receives the pm c.

The arm i extends horizontally along the door to a proper distance, and is, near its eX- tended end,divided longitudinally for a short distance, and curved toward the door a, and provided at the end with a roller, j, which is pivoted between the said divided ends, and bears upon the plate 7c, rigidly secured to the door a. Around the lower portion of the pin e, and having its end passed through a hole in the said pin, is coiled the spring 7L in such a manner that it may be passed over and across the arm i, and again coiled in an opposite direction around the pin o until near the upper part of the said pin,where it is passed through a hole in the pin. The upper end of the pin o is provided with a square part, y, which may be grasped by a wrench, and just below the part y the pin U is provided with a hole,

through which passes the removable pin f. The upper part, g, is provided on its upper side with the notches e, and the outer ends of the'pin f rest in two of the said notches c, so that when the pin o shall be turned in a proper direction the spring h will be wound up and brought to bear upon thc arm i, and the pinf is .then passed into the not-clics c and through the pin o, and the tension ofthe spring h then causes the arm t' and its roller y', at the end thereof, to bear upon the plate 7c and push the door to a closed position. The outer ends of' the plate k are provided with the outwardlyextending parts s and s', and through the outer ends of the parts s and s is passed and rigidly secured the bar m, having the notches n on its outer side, and near the hinged end of the arm z', and on the inner side thereof, is rigidly attached the spring l, which extends between the divided ends of the arm t', and has its extended end arranged to act as a pawl, o, and engage with the notches a.

Between the divided ends of and outside of the spring l, is pivoted the cam w, having a suitable lever to operate the same, and is arranged so that when the lever shall be turned to bear against the arm t', the cam w will allow the pawl o to be free from the said engagement with the notches mand when the lever is moved outward the cam operates to force the pawl o into engagement with the notches n and hold it rmly in that position, and secure the door until the pawl o shall be released by turning the cam w back again, so that the door may be secured in any desired position.

Near the fastened end of the spring Z is the notch p, formed by bending the spring Z so that the notch p shall have sloping sides and be adapted to engage, when the door is opened nearly to its full extent, with the extended parts, which projects beyond the bar m for that purpose. The notch p is arranged with the sloping sides, in order that it may, when engaged with the parts, ordinarily h'old the the door open. When power is applied to close the door, the spring gives away and allows-the part s to pass out of the notch p.

Having fully described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, isd

l. In a door-spring, the combination of the Sop plate c, provided with the extended parts qand bination of the rigid plate 7s, having the pro 10 notches c, the pin o, having on one end the jecting parts, with the spring l, provided with square part y and pin f, the spring h, the arm the notch p, and the spring-actuated arm z, z', and roller j, with the plate lc, having the provided with the roller j, substantially as set 5 parts s and s and the bnr m, provided with forth, and for the purpose specified.

the notches n, the spring Z, provided With the ARTHUR CARRIER. plwl 0 and the cani w, substantially as de- Vitnesses: scribed, and for the purpose set forth. CURTIS E. PIERCE,

2. In :L door-spring, as described, the com- G. H. FRANCIS. 

